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长期以来,在许多介绍牛顿发明“万有引力定律”的书籍中,都讲到一个苹果砸在牛顿头上的传奇故事:1665年6月,其时23岁的牛顿刚拿到剑桥大学的
For a long time, in many books introducing Newton’s invention of “Gravitation Law,” all told a legend that Apple had hit Newton’s head. In June 1665, at the age of 23, Newton just got a chance from Cambridge University